Stopping Someone from losing their changes Part II

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Hi,

I was reading this previous post on how to prompt the user if they want to
save their changes before they exit the form.

I found this piece of code but am not sure where to put it

<script language="javascript">
window.attachEvent( "onbeforeunload", Window_OnBeforeUnload ) ;

function ConfirmBeforeUnload()
{
var result = window.confirm("'Are you sure you want to do this?");
if(!result)
{
return(false);
}
}
</script>

At the end i put this statement
Page.RegisterStartupScript("clientScript", strScript)

If the user clicks that they want to save their changes how do I call a
function in my form from the javascript function.

Regards
Brian
.

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